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A square coil of 600 turns, each side 20...

A square coil of 600 turns, each side 20cm, is placed with its plane inclined at `30^(@)` to a uniform magnetic field of `4.5xx10^(-4)Wbm^(-2)`, Find the flux through the coil.

Text Solution

Verified by Experts

The correct Answer is:
`5.4xx10^(-3) Wb`
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A rectangular coil of 100 turns has length 5 cm and width 4 cm. it is placed with its plane parallel to a uniform magnetic field and a current of 2 A is sent through the coil. Find the magnitude of the magnetic field B, if the torque acting on the coil is 0.2 Nm^(-1).

A coil of wire enclosing an area 100 cm^2 is placed with its plane making an angle 60^@ with the magnetic field of strength 10^(-1) T. What is the flux through the coil? If magnetic field is reduced to zero in 10^(-3) s, then find the induced emf?

Knowledge Check

  • A current of 5A flows through a circular coil of 200 turns, each of radius 20 cm. It is placed in a uniform magnetic induction of 5xx10^(-2)" Wb/m"^(2) , such that the plane of the coil is parallel to the field. What is the torque acting on the coil?

    A
    3.14 N-m
    B
    1.57 N-m
    C
    6.28 N-m
    D
    9.42 N-m

  • A rectangular coil of turns, each of area 20 cm^(2) is suspended freely in a uniform magnetic field of induction 6 xx 10^(-2)Wb//m^(2) ,with its plane inclined at 60◦ with the field. What is the magnitude of the torque acting on the coil, if a current of 100mA is passed through it?

    A
    `4 xx 10^(-5)N-m`
    B
    `8 xx 10^(-5)N-m`
    C
    `1.2 xx 10^(4)N-m`
    D
    `2.4 xx 10^(-4)N-m`

  • A coil of 30 turns of wire each of 10 cm^(2) area is placed with its plance perpendicular to a magnetic field of 0.1 T . When the coil is suddenly withdraw from the field, a galvanometer connected in series with the coil indicated that a 10 mu C charge passes around the circuit. The combined resistance of the coil and galvanometer is

    A
    `3 Omega`
    B
    `30 Omega`
    C
    `300 Omega`
    D
    `3000 Omega`

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    A circular coil of 20turns and radius 10cm carries a current of 5A . It is placed in a uniform magnetic field of 0*10T . Find the torque acting on the coil when the magnetic field is applied (a) normal to the plane of the coil (b) in the plane of coil. Also find out the total force acting on the coil.

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